//
//  DeviceInfo.m
//  MSJD
//
//  Created by xiangbo on 2018/9/16.
//  Copyright © 2018 xiangbo. All rights reserved.
//

#import "DeviceInfo.h"

#import <UIKit/UIKit.h>
#import <sys/utsname.h>
#import <ifaddrs.h>
#import <arpa/inet.h>
#include <net/if.h>

#import <AdSupport/ASIdentifierManager.h>

#define IOS_CELLULAR    @"pdp_ip0"
#define IOS_WIFI        @"en0"
#define IP_ADDR_IPv4    @"ipv4"
#define IP_ADDR_IPv6    @"ipv6"

@implementation DeviceInfo

/** 获取发布版本号 **/
+ (NSString *)getBigVersion {
    NSDictionary *infoDictionary = [[NSBundle mainBundle] infoDictionary];
    return [infoDictionary objectForKey:@"CFBundleShortVersionString"];
}

+ (NSString *) getDeviceModel {
    NSString* deviceModel = [[UIDevice currentDevice] model];
    return deviceModel;
}

+ (NSString *)deviceIPAddress:(BOOL)preferIPv4 {
    NSArray *searchArray = preferIPv4 ?
    @[ /*IOS_VPN @"/" IP_ADDR_IPv4, IOS_VPN @"/" IP_ADDR_IPv6,*/ IOS_WIFI @"/" IP_ADDR_IPv4, IOS_WIFI @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6 ] :
    @[ /*IOS_VPN @"/" IP_ADDR_IPv6, IOS_VPN @"/" IP_ADDR_IPv4,*/ IOS_WIFI @"/" IP_ADDR_IPv6, IOS_WIFI @"/" IP_ADDR_IPv4, IOS_CELLULAR @"/" IP_ADDR_IPv6, IOS_CELLULAR @"/" IP_ADDR_IPv4 ] ;
    
    NSDictionary *addresses = [self getIPAddresses];
    
    __block NSString *address;
    [searchArray enumerateObjectsUsingBlock:^(NSString *key, NSUInteger idx, BOOL *stop)
     {
         address = addresses[key];
         if(address) *stop = YES;
     } ];
    return address ? address : @"0.0.0.0";
}

+ (NSDictionary *)getIPAddresses
{
    NSMutableDictionary *addresses = [NSMutableDictionary dictionaryWithCapacity:8];
    
    // retrieve the current interfaces - returns 0 on success
    struct ifaddrs *interfaces;
    if(!getifaddrs(&interfaces)) {
        // Loop through linked list of interfaces
        struct ifaddrs *interface;
        for(interface=interfaces; interface; interface=interface->ifa_next) {
            if(!(interface->ifa_flags & IFF_UP) /* || (interface->ifa_flags & IFF_LOOPBACK) */ ) {
                continue; // deeply nested code harder to read
            }
            const struct sockaddr_in *addr = (const struct sockaddr_in*)interface->ifa_addr;
            char addrBuf[ MAX(INET_ADDRSTRLEN, INET6_ADDRSTRLEN) ];
            if(addr && (addr->sin_family==AF_INET || addr->sin_family==AF_INET6)) {
                NSString *name = [NSString stringWithUTF8String:interface->ifa_name];
                NSString *type;
                if(addr->sin_family == AF_INET) {
                    if(inet_ntop(AF_INET, &addr->sin_addr, addrBuf, INET_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv4;
                    }
                } else {
                    const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6*)interface->ifa_addr;
                    if(inet_ntop(AF_INET6, &addr6->sin6_addr, addrBuf, INET6_ADDRSTRLEN)) {
                        type = IP_ADDR_IPv6;
                    }
                }
                if(type) {
                    NSString *key = [NSString stringWithFormat:@"%@/%@", name, type];
                    addresses[key] = [NSString stringWithUTF8String:addrBuf];
                }
            }
        }
        // Free memory
        freeifaddrs(interfaces);
    }
    return [addresses count] ? addresses : nil;
}

+ (NSString *)getDeviceType
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString * deviceType = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    return [deviceType stringByReplacingOccurrencesOfString:@"," withString:@"_"];;
}

+ (NSString *)getDeviceOriginalType
{
    struct utsname systemInfo;
    uname(&systemInfo);
    NSString * deviceType = [NSString stringWithCString:systemInfo.machine encoding:NSUTF8StringEncoding];
    return deviceType;
}

+ (NSString *)getDeviceIDFA{
    NSString *idfa = [[[ASIdentifierManager sharedManager] advertisingIdentifier] UUIDString];
    if (idfa) {
        return idfa;
    }
    return @"";
}

+ (NSString *)getCurrentTimestamp {
    NSDate* date = [NSDate dateWithTimeIntervalSinceNow:0];
    NSTimeInterval time=[date timeIntervalSince1970]*1000;
    NSString *timeString = [NSString stringWithFormat:@"%.0f", time];
    return timeString;
}

@end
